630w CMH color temp confusion

J

jerrymaine

Active Member

• Aug 15, 2019

• #1

Hello all, I'm considering my options between two color temp lamps. As in the title it's a 630w CMH, either 3100k or 4200k. Obviously the 4200k is more blue, 3100k more red. They will be used for flowering but looking at spectral charts it seems to me the 4200k has more red and more blue? I guess I don't understand enough about light. I've uploaded the charts given by the seller. Could someone help me sort this out?

 

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TintEastwood

Well-Known Member

• Aug 15, 2019

• #2

I have separate hoods but run both Philips 4k and 3k.
Early veg I use the single 4200.
Works well for my setup.
I'm not up on the technical.

 

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Dog Star

Well-Known Member

• Aug 15, 2019

• #3

jerrymaine said:

Hello all, I'm considering my options between two color temp lamps. As in the title it's a 630w CMH, either 3100k or 4200k. Obviously the 4200k is more blue, 3100k more red. They will be used for flowering but looking at spectral charts it seems to me the 4200k has more red and more blue? I guess I don't understand enough about light. I've uploaded the charts given by the seller. Could someone help me sort this out?

Click to expand...

I know folks that say 4200K is better for flowering than 3100K... if you look spectral chart than things what
these people claim looks to me as truth.. 4200K have wider and deeper specter in all colours..

 

PrometheanLeaf

Well-Known Member

• Aug 15, 2019

• #4

Is it a de bulb or 2x 315's? It matters.

 

Lucky Luke

Well-Known Member

• Aug 15, 2019

• #5

I run a 630wDE for flower and 3100 is fine.

 

J

jerrymaine

Active Member

• Aug 15, 2019

• #6

Thanks for the replies. It is a 630w DE in question. Just looking at the charts it seems the 4200K has more in each spectrum. I know I’m missing something.

 

Aviatorshades

Well-Known Member

• Aug 15, 2019

• #7

So I used a 4200 last time had a great run. Using a 2 3100 and 1 4200 and it’s looking better. I don’t think you can go wrong either way tbh. ‍